Turret-tool rest.



No. 887,985. PATENTD M'l, L. H. voLD @L J.BURT. TURRET TooL REST.

APPLICATION FILED MAR. 23. 1907.

2 SHEETS-SHEET lv ATTORNEYS.

No. 887,985. PATENTED MAY 19, 1908. L. H. VOLD & J. BURT.

TURRBT TOOL REST.

APPLICATION FILED 16.53.23, 1907.

2 SHEETS-SHEET Z.

LARS E. -VOLD, OF WESTVILLE, NEW

VANIA, ASSIGNORS TO JERSEY, AND JOHN BURT, OF NARBERTH, PENNSYL? WILLIAM SELLERS & COMPANY, INCORPORATED, OF PHILADEL- PHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

TUBRET-TOOL REST.

Specification of Letters Btent.

Patented May 19, 1908.

Applicaon med march 23, 1907. 'seg-E1 No. 364,128.

' T o all who/rn, 'it may concemi siding, respectively, at Westville and Nar= berth, counties of Gloucester and Montgomery, and States of New Jersey and Pennsylvania, have invented a new and useful Im- -provement in Turret-Tool Rests, of which full, clear, and exact (le-- the following is a scription, reference being had to the accompanying drawings, which form a part of this speciiication; Y

The object of the invention is an improved turret tool rest in which a number of tools, having cuttin edges, are placed in a desired order for roug ing and inishing a surface of speciied'shape, say, for instance, the iiange and tread of a locomotive driving Wheel.

The tools are of necessity heavy, and the labor of substituting one ioranother, often repeated in the course of the Work, is a serious loss of time and effort on the part of the operator.

provide a means of brmglng the successive tools easily into the desired position, and when there to clamp them in place with sulicient rigidity to withstand the enormouslyl heavy cuts for which they are intended.

Further, it is our object to arrange for one roughing tool which can be easily removed without having to bring the turret to a certain specified position.

It is a further object to arrange for a long.

roughing tool which may be frequently resharpened, and thus avoid wasting material, as would be the case if we used a short roughing tool not susceptible of frequent since a certain amount of length must be re-- tained for clamping purposes.

It is further an object to form the shank of one or more of the tools and the tool openings of a certain form which fully supports the tool against strains in cutting.

In order to accomplish this result, in the invention one of the tool openings in the turret head extends entirely across the same and throu h the center clamping bolt, so that a long too may be used and the tool may be inserted or removed'at either end. In car- A the top of slide a, by The object of the device, therefore, is to toward the center.

rying out this arrangement the clamping bolt moves or turns with the turret.

We also provide means whereby the same lever which is used to turnl the turret, may be used to clamp the turret to the slide.

We' will first describe the embodiment of our invention as shown in the accompanying drawing and then speciiically point out the invention in the claims.

In the drawings: Figure 1 is a plan view of our improved turret. Fig. 2 is a side view partial y in section showing also the slide. ig. 3 is a vertical section through turret at right angles to that shown in Fig. 2. Fig. 4 is a perspective view of cone washer.

a is the slideupon which. the turret is mounted. This slide is adjustable to operate to and from the work inthe usual manner of a lathe tool slide. The rotating tool holder orturret rest comprises three parts, a head or turret proper b, a base c anda bushing d. The lower portion of bushing d extends into which means the axial location of the turret is obtained. The turret proper b, the base '0, and bushing d could be made in one piece. The use of separate pieces is merely to `facilitate construction.

eis a bolt extending through the turret,the head 8 of which is in the lower surface of the slide a. This bolt is secured to the bushing d by a key f, the bushing being secured to base c by key g. Thus, as the turret turns, the bolt turnsalso.y By turning the bolt the turret will revolve on the slide a with the bushing d as a center. In the head or turret proper b and spaced around the saine are tool openings h, which extend from the periphery In these openings are placed the forming tools i which are secured therein by the set screws j. One or more of these tool openings h are provided with a wedge shaped or flaring mouth 20. The Shanks 21 of the tools i laced in such tool openings, have at the end joining the tool a flared or wedge shaped portion 22 corresponding to the mouth 20. The length of t e shank should be less than the length of the tool opening It so that'the ressure of the tool against the work will teh to wedge the portions 22 and 20 together, holdinglthe tool nected to the hub The angles of mouth 20 are against the cutting strains. the flared portion 22 and the sufficient to prevent binding.-

'lc is a tool opening which extends across the entire face of the head or turret roper b, an orifice l in the bolt e being in a 'nement with tool opening lc. As the bolt e and turret revolve. together the alinement of this orifice Z with tool opening 7c is maintained. In this tool opening, and rojecting through the orifice 7c, is placed thellong roughing tool m, which is clam ed therein by means of set screws n. On /tffe outer edge of the lower part of turret, are notches o spaced around to correspond with the slots lc and h.

p is a lever having the projection or pawl adapted to enter the notches o and thus hold the turret from rotation. A spring r acts on this lever p to hold the pawl g in engagement with the notch. A handle s enables the lever to be swung to withdraw the pawl and allow the turret to be revolved. Upon the bolt e is a shoulder t. A sleeve u surrounds the bolt above the shoulder t. Upon the periphery of this sleeve are notches w. Above this sleeve u is a nut x by which the sleeve may be clamped firmly against the shoulder t. The sleeve u is further secured to bolt e by being keyed thereto. Below this sleeve is a hub y surrounding the bolt e. On the lower face of this hub y are formed the two helical cam faces e and Z. These faces correspond with helical faces 2- and 3 respectively on the cone washer 4 below the hub. This cone washer fits in a conical orifice 5 in the head or turret proper, b, the angle of this washer being, referably, sufficient to free itself when re ieved from pressure. Cony is the lever 6 provided with a sprin latch 7, ada ted to enter the notches w. en this latc is so engaged, a movement offthe lever 6 will cause a rotation of the bolt e and with it the turret. When the latch is released and the lever moved in the direction of the full arrow, Fig. 1, it will, through the action of lever cam faces upon cone cam faces force the hub against the sleeve u lifting the bolt e and clamping its head to the slide and through the cone washer, the turret rest, to the slide. Thus the turret tool rest is firmly clamped to slide a. The cone Washer biting in to the conical orifice in the head or turret proper overcomes any turning tendency of the conical washer produced by the friction and tangential force on the cam faces.

Taking the parts to be fixed and it be desired to rotate the turret to bring another tool into action. The pawl g is released from notch o. The lever 6 is then moved in the direction of dotted arrow, F ig. l, which releases the turret from slide a. The latch 7 is then engaged with notch w and thel bolt e with a tool opening,

and turret revolved in either direction until the desired tool is brought into osition. When this point is reached, the paw g is engaged with the corresponding notch o. The latch 7 is then released from notch w, the lever 6 given a slight turn in direction of full arrow which again clamps the turret upon the slide. y

Having now fully described our invention, what we claim and desire to protect by Letters Patent is:

1. In combination, a turret tool rest, a slide, -a clamping bolt revoluble with and passing centrally through said turret tool rest, said bolt being4 rotatably connected with said slide, the turret head of said turret tool rest being provided with a tool opening extending entirely across the head, there being an orifice through the bolt in alinement with said opening.

2. In combination, a tool holder provided the mouth of which is of the tool o ening not being flared, anda tool, the shank of which at the juncture with' the tool proper, is fiared correspondingly to the mouth of the tool opening, the remainder of the shank not being flared the angle of the flare of the tool opening and tool shank being sufficient to prevent binding.

3. In combination, a tool holder provided with a tool opening, the mouth of which is flared, the remainder of the tool opening not Ibeing fiared, and a tool, the shank of which at the juncture with the tool proper is fiared correspondingly to the mouth of the tool opening, the remainder of the shank not being fiared, the length of the tool opening being greater than the length of the shank the angle of the flare of the tool opening and tool shank being sufficient to prevent binding.

4. In combination, a turret tool rest, a slide upon which said turret tool rest is rotatably mounted, a lever, means to connect and disconnect said lever and said turret to rotate the turret tool rest in either direction, and clamping mechanism to clamp the turret to the slide, said clamping mechanism being inactive when said lever and tool rest are connected, and means whereby, when the lever is disconnected from the turret tool rest, said lever in its rotation operates said clamping mechanism.

5.- In combination, a turret tool rest, a slide upon which said turret tool rest is rotatably mounted, a clamping bolt rotatable with said turret tool rest, clamping mechanism loosely surrounding said bolt adapted when moved independent of the tool rest to move said bolt to clamp, a lever normally connected with a member of said clamping mechanism, and means to positively connect and disconnect said lever and tool rest.

flared, the remainder adapted to lift the lever cam part, and with it the bolt clamping said bolt to the slide,

said turret forming an abutment for said cam part.

7. In combination, a turret tool rest, a slide upon which said turret tool rest is rotatably mounted, a bolt rotatable with said turret tool rest and seated in said slide, a sleeve, provided with notches, secured to said bolt, a lever, carrying a latch adapted to engage said notches, said bolt, .below said sleeve, a cam surface surrounding said bolt, connected with said lever, a cone washer upon said bolt having a cam surface coacting with the lever cam surface, and adapted to lift the lever cam surface, and a conical orifice in the turret in which said cone washer is adapted to enter.

8. ln combination, a turret tool rest, av

slide upon which said turret tool rest is rotatably mdunted, a bolt rotatable with said turret tool rest and seated in said slide, a sleeve, secured to said bolt, a lever, means to connect and disconnect said lever andsleeve a hub connected to said lever surrounding said bolt below said sleeve, thelower face of said hub having a cam surface, a washer, having a cam surface, adapted to coact with the lever hub cam surface When the lever is disconnected from the sleeve and lift the bolt to clamp, said turret tool rest forming an abutment ,for saidV cam surface.

9. Inlcombination, a turret tool rest, a slide upon Whichsaid turret tool rest is rotatably mounted, a bolt rotatable with said turret tool rest and d slide, a

seated in sai sleeve, secured to saidbolt, a lever, a hub connected to said lever surrounding said bolt face of said hub below said sleeve, the lower having a cam surface, a cone :washer having a cam surface adapted to coact with the lever hub cam surface, and a conical orifice in the turret in which said cone Washer is adapted to enter.

10. '1n combination, a turret tool rest, a slide upon which said turret tool rest is rotatably turret and seated in said slide, a lever loosely connected to said bolt, means to positively connect and disconnect said lever and turret tool rest to rotate the turret tool rest in either direction, and means whereby said leloosely mounted on 'with said lever,

mounted, a bolt rotatable with said" ver, in its rotation when disconnected from the bolt, lifts said bolt and clamps the turret to the slide.

11. In combination, a turret tool rest, a slide upoii which the turret tool rest is rotatably mounted, ya bolt rotatable with said turret tool rest, and seated in said slide, a lever, means to connect and disconnect said lever and said bolt, a cam art surrounding said bolt and connected with said lever, a cam part loose upon sa'd bolt and adapted to act upon said lever cam part, When said lever is disconnected from said bolt, means, eHective during said action to resist the ro tation of the loose cam part, and means effective when said lever cam part is lifted to lift the said bolt and clamp the turret tool rest to the slide.

12. In combination, a turret toolrest, a slide upon which said turret tool rest is rotatably mounted, a bolt rotatable with said turret tool rest, and seated in said slide; a lever loosely connected to said bolt, a cam surface surrounding said `bolt and connected and a cone Washer upon the bolt, having a cam surface coacting with the "lever cam surface, and adapted to lift said lever cam surface, and means on said'bolt engaging said lever and eective when said lever cam surface is lifted to lift said bolt and clamp the turret to the slide, and a conical orifice in the turret in which said cone washer is ada ted to enter.

18. n combination, a turret tool rest, a slide upon which said turret tool rest is rotatably mounted, a bolt rotatable with said turret tool rest and'seated in vsaid slide, a lever, means to positively connect and disconnect said lever and turret tool rest to rotate said turret tool rest in either direction, a hub connected to said lever surrounding the bolt,- .the lower face of said hub having a cam surface, a Washerhaving a cam surface adapted when said lever is disconnected from the said turret tool rest to coact with the lever hub cam surface and lift said hub, and means when said hub is lifted to lift said bolt and clamp the turret tool rest to the slide.

14. 1n combination, a turretI tool rest, a slide upon which said turret tool rest is rotatably ymounted, a bolt rotatable with said turret tool rest and seated in said slide, a lever, a hub connected to said lever surrounding said bolt, the lower face of said hub having a cam surface, a cone Washer having a cam surface adapted to coact with the lever hub cam surface v and lift said hub, means on said bolt engaging said lever andeffective When said hub is lifted to lift said bolt and clamp the turret tool rest to the a conical oriiice in said turret tool rest in which said cone washer is adapted to enter.

15. In combination, a tool holder provided slide, and

with a tool opening, having a portion of equal Width throughout and havingl a flaring mouth7 and a' tool, the shank of which, re mote from the tool pro )er, is of equal Width and corresponding to t 11e portion of the tool opening of equalA Width, and the shank at the juncture of the tool proper being ared oorrespondingly to the mouth of the tool openlng.

this 19th day of March, 1907.

LARS H. VOLD. JOHN BURT.

Witnesses:

HELEN FAHNESTOCK, FRANK G. GRIER. 

